Abstract: The weighing apparatus is for automatically weighing trash that is separated from a fiber sample. It includes a scale, a weigh pan disposed on the scale, a cleaner for passing a cleaning element across a surface of the weigh pan when the scale is not taking a weight measurement, and a controller for selectively controlling operations and sequencing of the scale and the cleaner.

Abstract: Improved welding stud (20) includes a generally cylindrical body (34). A first series of annular rings (42) are disposed on a first end portion (18) of the cylindrical body (34). A second series of annular rings (44) are disposed on a second end portion (26) of the cylindrical body (34). The rings (42, 44) are asymmetrical and have reverse configurations. Thus, the annular rings (42) on one end portion of the stud are a mirror image of the rings (44) on the opposite end portion of the stud. Either end of the stud (20) may be stud welded to a base member (14) using the drawn arm short cycle or gas arc stud welding processes. A cap (24) may then be press fitted onto the opposite end of the stud to secure insulation.

Abstract: A stud welding gun (20) includes a barrel (42) which extends outward from a handle assembly (24). A chuck (46) on an outer end portion of the barrel (42) holds a stud (22) while the stud is being welded to a base member. A stud feed member (76) is manually moved along the barrel (42) from a retracted position to an extended position to sequentially feed studs (22) in a linear array (110) to the chuck (46). The stud feed member (76) has a leading end portion (124) which applied force against a trailing stud (22) in the array (110) of studs to move a leading stud (22) in the array of studs into the chuck (46). A detent (154) is engageable with a trailing stud (22) in the array (110) of studs to hold the array of studs against movement in a direction away from the chuck (46).

Abstract: A stud welding gun (20) includes a frame (36) which extends outward from a handle assembly (24). A chuck (46) on an outer end portion of the frame holds a stud (22) while the stud is being welded to a base member. A stud supply (60) is connected with the frame (36) and includes a housing (64) which receives a stud retainer or magazine (70) containing a linear array (72) of studs (22) disposed in a side-by-side relationship. The studs (22) are fed from the retainer (70) in the stud supply housing (64) to a receiving location (62). A stud feed member (76) is manually moved from a retracted position to an extended position to sequentially feed studs (22) to the chuck (46). The size of a linear slot (88) in the stud supply housing (64) can be varied to enable retainers (70) containing studs (22) of different lengths to be positioned in the stud supply housing.